Subscribe Now! National Geographic Magazine $15
Visit our Online Shops

Sign up for free

Newsletters

Once a month
get new photos
and expert tips.

Kemp's Ridley Sea Turtle
Lepidochelys kempii

Photo: Kemp's ridley sea turtle hatchlings
Unlike other sea turtles, female Kemp's ridley turtles come ashore to lay their eggs in the daylight hours.
Photograph by Bill Curtsinger

Kemp's Ridley Sea Turtle Profile

The Kemp’s ridley turtle is the world’s most endangered sea turtle, and with a worldwide female nesting population roughly estimated at just 1,000 individuals, its survival truly hangs in the balance. Their perilous situation is attributed primarily to the over-harvesting of their eggs during the last century. And though their nesting grounds are protected and many commercial fishing fleets now use turtle excluder devices in their nets, these turtles have not been able to rebound.

For this reason, their nesting processions, called arribadas, make for especially high drama. During an arribada, females take over entire portions of beaches, lugging their big bodies through the sand with their flippers until they find a satisfying spot to lay their eggs. Even more riveting is the later struggle to the ocean of each tiny, vulnerable hatchling. Beset by predators, hatchlings make this journey at night, breaking out of their shells using their caruncle, a single temporary tooth grown just for this purpose.

Found primarily in the Gulf of Mexico, but also as far north as Nova Scotia, Kemp’s ridleys are among the smallest sea turtles, reaching only about 2 feet (65 centimeters) in shell length and weighing up to 100 pounds (45 kilograms). Their upper shell, or carapace, is a greenish-grey color, and their bellies are off-white to yellowish.

They prefer shallow waters, where they dive to the bottom to feed on crabs, which are their favorite food, and other shellfish. They also eat jellyfish, and occasionally munch on seaweed and sargassum. They may live to be 50 years old.

Females aren’t sexually mature until about ten to twelve years of age. They nest every one to three years and may lay several clutches of eggs each season. Highly migratory animals, they often travel hundreds of miles (kilometers) to reach their nesting beach, usually the same beach they hatched from.

Fast Facts

Type: Reptile
Diet: Omnivore
Average lifespan in the wild: About 50 years
Size: 2 ft (65 cm)
Weight: 100 lbs (45 kg)
Did you know? A 1947 amateur film showed some 40,000 female Kemp's ridley turtles nesting in Mexico in a single day. Today, it is estimated that only about 1,000 breeding females exist worldwide.
Protection status: Endangered
Size relative to a 6-ft (2-m) man:
Illustration of the animal's relative size

Multimedia

Other Sea Turtle Features

Photo: Turtle hatchling

Sea Turtles Quiz

Sea turtles have been swimming in our oceans since the time of the dinosaurs. How much do you know about these shelled swimmers?

Photo: Green sea turtle

Photo Gallery: Sea Turtles

From leatherback hatchlings making their perilous journeys to a hawksbill turtle swimming with flippers spread like wings, see these amazing creatures in action.

Photo: Turtle swimming

Turtle-Cam

While researching sea turtles in Australia, National Geographic's Crittercam team discovered a surprise in the eating habits of marine creatures.

How You Can Help

More Turtles

Map: Locator map for the Kemp's ridley sea turtle
 Kemp's Ridley Sea Turtle range

Special Advertising Sections

Photo: Prize ribbon

Photo Contest

We received over 12,000 entries, and over 28,000 votes were cast. Find out who takes home the Grand Prize!

Photo: Glass of water

Take Quiz

Eighteen percent of the world's population can't get safe drinking water. Test your water knowledge.

Reptiles Right Rail

Get the Latest Headlines

Photo: Three-horned chameleon

Make us your online news source.

Get Animal Pictures

Photo: Nile crocodile

Get your daily dose of photos.

Bring Your Phone to Life

Image: Mobile phone and giraffe

Put the sights and sounds of National Geographic on your mobile phone.

For Kids!

Photo: A cartoon dog

It's no stretch to find fun facts on our Kids site!

Shop National Geographic DVDs

Photo: Human Footprint DVD cover

Whatever your interest, you'll be entertained and educated with our collection of best-selling DVDs.